Chapter 4: Sentence Relations and Truth

Chapter 4: Sentence Relations and Truth

1. The truth is said to be empirical or contingent, because we need access to the facts of the world to know whether the statement is true or not

2. the study of truth effect connectives like ¬ or ^ is called propositional logic

3. the connective to "or" is called disjuntion and is symbolized as v

4. counterfactuals is when the speaker overtly signals that the antecendent is false

5. truth that is known before or without experience has traditionally been called a priori, necessary truths which cannot be denied without a contradiction, and contingent truths can be contradicted depending on the facts

6. the study of the truth in sentences with quantifiers is called predicate logic

7. paraphrases are sentences which have the same set of entailments

8. other types of presupposition are produced by particular words or construtions, which together are sometimes called presupposition triggers